Organic Light-Emitting Diode with TiOPc Layer–A New Multifunctional Optoelectronic Device

An organic light-emitting diode containing titanyl phthalocyanine (TiOPc) and tris-(8-hydroxy quinoline) aluminum (Alq 3 ) layers has been fabricated. The device exhibits green emission from the Alq 3 emissive layer under ambient conditions. Below the turn-on voltage, the green emission is instantan...

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Bibliographic Details
Published inJapanese Journal of Applied Physics Vol. 40; no. 9A; p. L948
Main Authors Jingping Ni, Jingping Ni, Takanori Tano, Takanori Tano, Yoshiro Ichino, Yoshiro Ichino, Takeshi Hanada, Takeshi Hanada, Toshihide Kamata, Toshihide Kamata, Noriyuki Takada, Noriyuki Takada, Kiyoshi Yase, Kiyoshi Yase
Format Journal Article
LanguageEnglish
Published 15.09.2001
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Summary:An organic light-emitting diode containing titanyl phthalocyanine (TiOPc) and tris-(8-hydroxy quinoline) aluminum (Alq 3 ) layers has been fabricated. The device exhibits green emission from the Alq 3 emissive layer under ambient conditions. Below the turn-on voltage, the green emission is instantaneously switched on by laser irradiation at 650 nm, indicating that the device can be used as a red-to-green light converter. Above the turn-on voltage, the green emission is greatly enhanced by laser irradiation, while the current-voltage characteristics are significantly modified. Amplification factors of the emission intensity as well as the current density upon laser irradiation are found to greatly depend on the TiOPc layer thickness. The TiOPc layer acts as a hole generation layer rather than as a buffer layer.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.40.L948